Whatever the mind of man creates, should be controlled by man's character
Science may set limits to knowledge, but should not set limits to imagination.
Knowing yourself is the beginning of all wisdom.
Don't criticize what you don't understand, son. You never walked in that man's shoes.
What a man does for others, not what they do for him, gives him immortality.
A mistake is always forgivable, rarely excusable and always unacceptable.
All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.
Thought can be so seductive and hypnotic that it absorbs your attention totally, so you become your thoughts.
The greatest of wealth is the richness of the soul.
Dark and difficult times lie ahead. Soon we must all face the choice between what is right and what is easy.
The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends, and where the other begins?
Tact is the knack of making a point without making an enemy.
Experience is the only prophecy of wise men.
Confidence is contagious. So is lack of confidence.
Those who see the invisible can do the impossible.
Do not reveal what you have thought upon doing, but by wise council keep it secret being determined to carry it into execution.
Let no man pull you low enough to hate him.
And this sensitivity will create new friendships for you - friendships with trees, with birds, with animals, with mountains, with rivers, with oceans, with stars. Life becomes richer as love grows.
Property is surely a right of mankind as real as liberty.
It is easy to be brave at a safe distance.
He who chooses the beginning of the road chooses the place it leads to.