Effort plus motive equals result.

Possibly the most interesting first impression of my life came from the world of dreams.

The number of laws is constantly growing in all countries and, owing to this, what is called crime is very often not a crime at all, for it contains no element of violence or harm.

One cannot keep all old views and opinions and acquire new ones.

Understanding is always the understanding of a smaller problem in relation to a bigger problem.

Many things are mechanical and should remain mechanical. But mechanical thoughts, mechanical feelings—that is what has to be studied and can and should be changed. Mechanical thinking is not worth a penny. You can think about many things mechanically, but you will get nothing from it.

a man can be given only what he can use; and he can use only that for which he has sacrificed something