You mean "The Tree of Liberty must be refreshed with the blood of Patriots and Tyrants". It means a revolution should take place once government gets too big or they begin to infringe on the free will's of people. Which means, Patriots and Tyrants will die if it means to maintain Liberty.
Answer:
he was on a journey to find a Western Passage
Explanation:
he was looking for a sea route to china and india to find goods.