With a RSS ideology ruling over India I am not surprised you don't know what really secularism is. Look at the fascist hindutva dictatorship direction of your country and you call yourself a democracy. You preach the ideology of a guy who murdered your founding father gandhi. Now that's some real identity crisis.
MA Jinnah was secular its unfortunate later his ideology was hijacked. We got partition for Muslims of subcontinent but the constitution was meant to be separated from the religion. That's what secularism is and that's why I am a secular nationalist.
I hope your fellow Indian
@Joe Shearer will atleast try to understand what I am saying and share his two cents.
Muhammad Ali Jinnah didn't want a theocracy like in Iran and Afghanistan, but Islamic social democracy. He made countless references to that and
none to secularism, unless you think allowing non Muslims to practice their religion is secularism than you would be surprised to know that the Prophet PBUH did that too and thus, this too is an Islamic principal.
Anyway, here is some of his speeches and promises to the constituents of the new state.
"
You have to stand guard over the development and maintenance of Islamic democracy, Islamic social justice and the equality of manhood in your own native soil"
Quaid to officers & men of the 5th Heavy & 6th Light Ack Ack Regiments in Malir, Karachi (21 February 1948)
"
I cant understand logic of those who hv bn deliberately & mischievously propagating tht Constitution of Pak will not b based on Islamic Sharia. Islamic principles today are as much applicable to life as they were 1300 years ago”
Speech to Karachi Bar Association, Jan 25, 1948
"The foundation of our Islamic code is that we stand for liberty, equality and fraternity" 
"We must work our destiny in our own way and present to the world an economic system based on true Islamic concept of equality of manhood and social justice"
Quaid address on occasion of opening of State bank of Pakistan (1st July 1948)
"
I am glad that there is full realization on your part tht now the position is basically different. It is no longer a foreign govt .... but it is now a MUSLIM govt & MUSLIM rule that holds the reigns of this great .... State of #Pakistan"
Address to Tribal Jirga 17 April 1948
"
In the end I warmly thank you for the wholehearted & unstinted declaration of your pledge & your assurances to support #Pakistan, so that it may reach the pinnacle of glories of Islam and become a great and mighty nation among other nations of the world"
Speech to jirga 17/4/48
"You are only voicing my sentiments and the sentiments of millions of Musalmans when you say that [[Pakistan should be based on sure foundations of social justice and Islamic socialism]] which emphasizes equality and brotherhood of man."
Speech in Chittagong, 26/3/1948
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It is my belief tht our salvation lies in following the golden rules of conduct set for us by our great law giver, Prophet of Islam. Let us lay the foundation of our democracy on the basis of truly Islamic ideals & principles"
#QuaidEAzam at Darbar in Sibi Balochistan 14/2/1948
"
What more can one really expect than to see that this mighty land has now been brought under a rule, which is Islamic, Muslim rule, as a sovereign independent State"
Speech in reply to Welcome Address by the Principal, Staff & Students of Edwardes College, Peshawar, 18/4/1948