“The far right was on the march in the 1930s, and we defeated the fascists through a great united working-class effort. That sense of unity and strength is what gave people confidence to change things.”
~ Ken Loach

More on strength:
“That which does not kill us makes us stronger.”
~ Friedrich Nietzsche
“This is no time for ease and comfort. It is time to dare and endure.”
~ Winston Churchill
“The world breaks everyone, and afterward, some are strong at the broken places.”
~ Ernest Hemingway
“Be sure you put your feet in the right place, then stand firm.”
~ Abraham Lincoln
___________________________________
Strong /strôNG/ adjective
1- having the power to move heavy weights or perform other physically demanding tasks. “she cut through the water with her strong arms”
2- able to withstand great force or pressure. “cotton is strong, hard-wearing and easy to handle”