我只是一个来自加拿大、怀揣梦想的孩子。

I’ve always been an optimist and I suppose that is rooted in my belief that the power of creativity and intelligence can make the world a better place.

Confidence is key, but arrogance will destroy you.

解释：使用毒性大的药物治疗疾病时，病情十成中只能去掉六成就要停药，以免伤害正气。