It takes a great deal of bravery to stand up to our enemies, but just as much to stand up to our friends.
Doubt is the origin of wisdom
Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.
One who loses wealth loses much. One who loses a friend loses more. But one who loses courage loses all.
Where you stand depends on where you sit.
In order to change the world, you have to get your head together first
Gravity is only the bark of wisdom's tree; but it preserves it
No one cares how much you know, until they know how much you care
It takes a lot of courage to show your dreams to someone else.
Better mad with the rest of the world than wise alone.
If you buy what you do not need, you will need what you cannot buy.
There are no eternal facts, as there are no absolute truths.
Confidence is contagious. So is lack of confidence.
Criticize the act, not the person.
If you do what you've always done, you'll get what you've always gotten.
He who conquers others is strong; he who conquers himself is mighty.
What lies behind us and what lies ahead of us are tiny matters compared to what lives within us.
How often I found where I should be going only by setting out for somewhere else.
Empty your cup so that it may be filled; become devoid to gain totality.
The road of excess leads to the palace of wisdom.
It is man that makes truth great, not truth that makes man great.