果决人似忙，心中常有余闲；因循人似闲，心中常有余忙。
办事果断的人看起来好像忙碌，其实心中常有闲暇。因循苟且的人看起来闲暇，其实心中常有牵念。
The only limits that exist are the ones you place on yourself.
The discovery of odorant receptors and the organization of the olfactory system has opened up new avenues for research in neuroscience and biology.