Never mistake motion for action.
That which can be asserted without evidence, can be dismissed without evidence.
Nothing that is worth knowing can be taught.
I am heartened to find so much wit in you, that you’d give thought to consequences and choose your way with reason, not passion only.
An expert is a person who has made all the mistakes that can be made in a very narrow field.
It is no small art to sleep: for that purpose you must keep awake all day.
To him who looks upon the world rationally, the world in its turn presents a rational aspect. The relation is mutual.
Never memorize something that you can look up.
The intuitive mind is a sacred gift – and the rational mind is a faithful servant. – We have created a society that honors the servant – and has forgotten the gift.