Nec Sperno, Nec Metuo
Nec pugnam occipias, sed te oppugnantibus offer:
Sic hostis poteris victor abire tui.

Here is the vocabulary:
nec - and not, nor
nec...nec... - neither...nor...
sperno - scorn, despise
metuo - fear
pugna - fight
occipio - begin
sed - but
tu - you
oppugno - attack, assault
offero - offer, present
sic - thus
hostis - enemy
possum - can, be able
victor - victor, winner
abeo - go away
tuus - your, yours