Without hard work, nothing grows but weeds.
Wherever you are - be all there.
If you think you can do it, you can.
Be thine own palace, or the world's thy jail.
Do not weep do not wax indignant. Understand.
It's always too early to quit.
By failing to prepare, you are preparing to fail.
Things do not happen. Things are made to happen.
The wise does at once what the fool does at last.
To know oneself, one should assert oneself.
Many who have had an opportunity of knowing any more about mathematics confuse it with arithmetic, and consider it an arid science. In reality, however, it is a science which requires a great amount of imagination.