Every grown-up man consists wholly of habits, although he is often unaware of it and even denies having any habits at all.

By teaching others you will learn yourself.

One of the best means for arousing the wish to work on yourself is to realize that you may die at any moment. But first you must learn how to keep it in mind.

Practice love first on animals, they are more sensitive.

We must strive for freedom if we strive for self-knowledge. The task of self-knowledge and of further self-development is of such importance and seriousness, it demands such intensity of effort, that to attempt it any old way and amongst other things is impossible. The person who undertakes this task must put it first in his life, which is not so long that he can afford to squander it on trifles.

Man must use what he has, not hope for what is not.

I ask you to believe nothing that you cannot verify for yourself.