Reinforcement is the central factor in the acquisition of new behavior patterns.
在物理学中，真理总是伴随着美。
后悔是我们喝下的毒药，却希望别人会死。
解释：善于治理国家的君主，应该顺应民心。
Never put off till tomorrow what you can do the day after tomorrow.
"The future belongs to those who dare to dream and have the courage to pursue those dreams."
Los silencios dicen más que las palabras, pero hay que saber escucharlos.