I think, therefore I am.

Don't expect to be good at maths or understand things straight away. Be patient and persistent. The most powerful warriors are patience and time.

The master has failed more times than the beginner has even tried

Dreams don't work unless you do.

It is never too late to turn an unproductive day into a productive one.

Success is the sum of small repeated efforts, day in and day out.

1.00³⁶⁵=1 and 1.01³⁶⁵=37.7. Doing nothing at all versus small steps at a time. 

Everything you want is on the other side of fear

I have not failed, I've just found 10,000 ways that won't work.

Be strong enough to stand alone, smart enough to know when you need help, and brave enough to ask for it.

There is no elevator to success, you have to take the stairs.

A hero is no braver than an ordinary man, but he is braver five minutes longer.

99% of genius comes from hard work, the remaining 1% comes from innate talent

Knowledge is of no value unless you put it into practice.

Don't put off until tomorrow what you can do today. If today you have no time, it means tomorrow you'll be too tired and the next day you'll be something else.