In a way there's only a fine shade of difference between the healthy and the deranged.

If it were considered desirable to destroy a human being, the only thing necessary would be to give his work a character of uselessness

Intelligence alone is not nearly enough when it comes to acting wisely.

I can see the sun, but even if I cannot see the sun, I know that it exists. And to know that the sun is there - that is living.

Man has such a predilection for systems and abstract deductions that he is ready to distort the truth intentionally he is ready to deny the evidence of his senses only to justify his logic.

One can't understand everything at once, we can't begin with perfection all at once! In order to reach perfection one must begin by being ignorant of a great deal. And if we understand things too quickly, perhaps we shan't understand them thoroughly.

Let us not forget that the reasons for human actions are usually incalculably more complex and diverse than we tend to explain them later, and are seldom clearly manifest.