Things which matter most must never be at the mercy of things which matter least.

Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.

There are things known and there are things unknown, and in between are the doors of perception.

Experience teaches us that it is much easier to prevent an enemy from posting themselves than it is to dislodge them after they have got possession.

Don't criticize what you can't understand.

When I stand before God at the end of my life, I would hope that I would not have a single bit of talent left, and could say, 'I used everything you gave me'.

The simple things are also the most extraordinary things, and only the wise can see them.

The ultimate authority must always rest with the individual's own reason and critical analysis.

The very essence of instinct is that it's followed independently of reason.

If you're happy, don't worry you'll get over it.

There is always time to add a word, never to withdraw one.

Each problem that I solved became a rule which served afterwards to solve other problems.

Our society is run by insane people for insane objectives.

Adapt what is useful, reject what is useless, and add what is specifically your own.

If we don't believe in freedom of expression for people we despise, we don't believe in it at all.

It takes a great deal of bravery to stand up to our enemies, but just as much to stand up to our friends.

A person who spends more than he earns is a fool

Unfortunately, the clock is ticking, the hours are going by. The past increases, the future recedes. Possibilities decreasing, regrets mounting.

In the East, all the religions preach egolessness. So in the East, everybody is against the ego from the very beginning.

We are all born ignorant, but one must work hard to remain stupid

Realize deeply that the present moment is all you ever have.