I felt just overwhelmed by input: the Vietnam war and the collapse of the '60s and the proliferation of media' it just felt like everything was too much to handle and you just tuned out. ↗
When you work out or you're doing anything active, it's more fun as a group. You may lose track of the time, and the next thing you know, you're working out for two hours because you're having fun. ↗
What appeared to the earlier physicists to be the constant quantity of heat is nothing more than the whole motive power of the motion of heat, which remains constant so long as it is not transformed into other forms of work, or results afresh from them. ↗