A book is a mirror: if an ape looks into it an apostle is hardly likely to look out.
Dare to risk public criticism.
Remember upon the conduct of each depends the fate of all.
The secret of being a bore is to tell everything.
All honor's wounds are self-inflicted.
Sunlight is painting.
Parents are usually more careful to bestow knowledge on their children rather than virtue, the art of speaking well rather than doing well; but their manners should be of the greatest concern.
I hope I shall possess firmness and virtue enough to maintain what I consider the most enviable of all titles, the character of an honest man.
A good goal is like a strenuous exercise - it makes you stretch.
Trying to define yourself is like trying to bite your own teeth.
For the meaning of life differs from man to man, from day to day and from hour to hour. What matters, therefore, is not the meaning of life in general but rather the specific meaning of a person's life at a given moment.
I am one of those who think like Nobel, that humanity will draw more good than evil from new discoveries.
Your personal nature seeks its paradise.
After all, science is essentially international, and it is only through lack of the historical sense that national qualities have been attributed to it.
We are all worms, but I do believe that I am a glow-worm.
A scientist in his laboratory is not a mere technician: he is also a child confronting natural phenomena that impress him as though they were fairy tales.?
Tradition becomes our security, and when the mind is secure it is in decay.
Genius is sorrow's child.
What is necessary to change a person is to change his awareness of himself.
Forewarned, forearmed. To be prepared is half the victory.
A hero cannot be a hero unless in a heroic world.