He had a lighthearted disposition and a soul filled with optimism.是什么意思？

He had a lighthearted disposition and a soul filled with optimism.

他生性快活,心中无限乐观.

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

lighthearted

adj. 轻松愉快的，无忧无虑的，随便的，漫不经心的；

例句
By merely letting drop one lighthearted remark, Miss Pao had Fang hooked.
鲍小姐只轻松一句话就把方鸿渐钩住了.

disposition

n. 性情，性格，意向，倾向，安排，配置，<军>部署，战略（战术）计划；

例句
This has given him a disposition to consider our traditions critically...
这使他倾向以批判眼光看待我们的传统。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

soul

n. 灵魂，精神，幽灵，人；adj. 美国黑人文化的；

例句
Although he was twice as old as us, he became the life and soul of the company.
虽然他的年纪是我们的两倍，但他却成为了公司的灵魂人物。

filled

adj. 满的，填满的，充气的，加载的；v. （使）充满， （使）装满，填满( fill的过去式和过去分词 )，满足，配药，（按订单）供应；

例句
The room filled with the acrid smell of tobacco...
房间里弥漫着刺鼻的烟草味。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

optimism

n. 乐观，乐观主义；

例句
UN officials are expressing cautious optimism that the latest ceasefire is holding.
联合国官员对于最近的停火协定是否有效持谨慎的乐观态度。