Clear thinking requires courage rather than intelligence.

Clear thinking requires courage rather than intelligence.

I kind of think too much, I try do too many things at once.

I kind of think too much, I try do too many things at once.

A man who does not think for himself does not think at all.

A man who does not think for himself does not think at all.

I think and think for months and years. Ninety-nine times, the
conclusion is false. The hundredth time I am read more

I think and think for months and years. Ninety-nine times, the
conclusion is false. The hundredth time I am right.

Think for yourselves and let others enjoy the privilege to do so, too

Think for yourselves and let others enjoy the privilege to do so, too

Thought is action in rehearsal

Thought is action in rehearsal

A long habit of not thinking a thing wrong, gives it a superficial appearance of being right, and raises at read more

A long habit of not thinking a thing wrong, gives it a superficial appearance of being right, and raises at first a formidable outcry in defense of custom. But the tumult soon subsides. Time makes more converts than reason.

Those who know how to think need no teachers.

Those who know how to think need no teachers.

Small is the number of people who see with their eyes and think
with their minds.

Small is the number of people who see with their eyes and think
with their minds.