Whenever you find yourself doubting how far you can go, just remember how far you have come.

I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.

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.

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

Everything you want is on the other side of fear

The wise person knows that no answer is also an answer

Success is not final and failure is not fatal. It is the courage to continue that counts.

The greatest enemy to human potential is your comfort zone

I think, therefore I am.

Pure mathematics is in its way, the poetry of logical ideas.

Hope might be a good breakfast, but it makes a very poor dinner

Success can never happen without the journey (struggle).

Start, struggle, fail, fix and learn. Repeat.

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

We learn more from failure than we do from success.