Here are some inspirational quotes : 

If I have seen further, it is by standing on the shoulders of giants
– Isaac Newton

There is fear in all of us, it is how you live with it, that makes you who you are
– Tim Winton (Breath)

If men define situations as real, they are real in their consequences
– Thomas Theorem

If you can’t explain it to a six year old, you don’t understand it yourself.
– Albert Einstein

Insanity is doing the same thing, over and over again, but expecting different results.
– Narcotics Anonymous

Live as if you were to die tomorrow. Learn as if you were to live forever.
– Mahatma Gandhi

Be the change that you wish to see in the world.
– Mahatma Gandhi

Private victories precede public victories
– Stephen R. Covey

Each of us guards a gate of change that can only be opened from the inside
– Marilyn Ferguson

Between stimulus and response, man has the freedom to choose
– Viktor Frankl

Form follows function
– architectural maxim

If you cannot do great things, do small things in a great way
– Napoleon Hill

Those who have a why to live, can bear almost any how
РViktor Frankl 

There is no real excellence in all this world which can be separated from the right living
– David Starr Jordan

Impossible is just an opinion
– Paulo Coelho