We are all very ignorant. What happens is that not all ignore the same things.

Time is what the clock says.

Never let yourself be seduced by any problem, no matter how difficult.

There are yet people who say there is no God. But what really makes me angry is that they quote me for the support of such views

Intellectual growth should commence at birth and cease only at death.

Nature shows us only the tail of the lion. But there is no doubt in my mind that the lion belongs with it even if he cannot reveal himself to the eye all at once because of his huge dimension.

We can understand almost anything, but we can't understand how we understand.