“Happiness isn't something that depends on our surroundings...It's something we make inside ourselves.”

“A diamond is a chunk of coal that did well under pressure.”

“Tell me and I forget, teach me and I may remember, involve me and I learn.” 

“You can't go back and change the beginning, but you can start where you are and change the ending.”

“I didn’t fail the test. I just found 100 ways to do it wrong.”

“Change your thoughts and you change your world.”

“You will find it is necessary to let things go, simply for the reason that they are too heavy.”

“Test scores are only as useful as the interpretations made of them.”

“Dripping water hollows out stone, not through force but through persistence.”

“Yesterday I was clever, so I wanted to change the world. Today I am wise, so I am changing myself.”

“It’s not whether you get knocked down, it’s whether you get up.”

“We first make our habits, then our habits make us.”

“Tests are multifactorial; therefore, different individuals may obtain the same score on a test for very different reasons.”

“Measure twice, cut once.”

“The absence of evidence is not evidence of absence.”

“Life is ten percent what happens to you and ninety percent how you respond to it.”