Found an answer :)
<apex:component>
<apex:attribute name="includejQuery" type="Boolean" required="false" default="false" description="True to include jQuery" />
<apex:outputPanel layout="none" rendered="{!includejQuery}">
<apex:includeScript value="{!URLFOR($Resource.jQuery, 'jQuery/js/jquery-1.9.1.js')}"/>
</apex:outputPanel>
<apex:includeScript value="{!URLFOR($Resource.jQuery, 'jQuery/js/jquery-ui-1.10.3.custom.min.js') }" />
<apex:includeScript value="{!URLFOR($Resource.jQuery, 'jQuery/js/anotherScript.js') }" />
</apex:component>
Then in my page:
<apex:page>
...
<c:Scripts includejQuery="true" />
...
</apex:page>