Nescio, vel, si forte scio, me nescio scire.
Quod scio, Socratice me scio scire nihil.
Source: Owen 12.4. De Modo Faciendi Lapidem Philosophorum
Meter: elegiac
nescio - not know, be ignorant, unaware
vel - or, or even
si - if
fors - chance, luck, fortune
scio - know, understand
ego - I
qui, quae, quod - who, which
Socratice - by the Socratic method, philosophically
nihil - nothing