The mind unlearns with difficulty what it has long learned.
Lucius Annaeus Seneca
The superior man makes the difficulty to be overcome his first interest; success only comes later.
Confucius
The very greatest things - great thoughts, discoveries, inventions - have usually been nurtured in hardship, often pondered over in sorrow, and at length established with difficulty.
Samuel Smiles
To know yet to think that one does not know is best; Not to know yet to think that one knows will lead to difficulty.
Lao Tzu
Where there is no choice, we do well to make no difficulty.
George MacDonald
In youth we run into difficulties. In old age difficulties run into us.
Josh Billings
It is not because things are difficult that we do not dare, it is because we do not dare that things are difficult.
Seneca
In time of difficulties, we must not lose sight of our achievements.
Mao Tse-Tung
Doing easily what others find difficult is talent; doing what is impossible for talent is genius.
Henri-Fracdacric Amiel
Difficult times have helped me to understand better than before, how infinitely rich and beautiful life is in every way, and that so many things that one goes worrying about are of no importance whatsoever.
Isak Dinesen
Every problem has a gift for you in its hands.
Richard Bach